Concrete-block mold.



PATENTED OCT. 10, 1905.

E, KEAGY. CONCRETE BLOCK MOLD. APPLICATION FILED MARIO, 1904. RENEWEDMAY 25,1905.

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E. KEAGY.

CONCRETE BLOCK MOLD.

APPLICATION FILED MARJO, 1904. RENEWED MAY 25.1905.

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Af/arney UNTTE STATES PATENT OFFICE.

CONCRETE-BLOCK IVIOLD.

Specification of Letters Patent.

Patented Oct. 10, 1905.

Application filed March 10, 1904. Renewed May 26, 1905. Serial No.262,269.

To all 2072 0172, it may concern.-

Be it known that I, EDWARD KEAGY, a citizen of the United States,residing at Newark, in the county of Licking and State of Ohio, haveinvented certain new and useful Improvements in Concrete-Block Molds, ofwhich the following is a specification.

This invention relates to molds especially adapted for the formation ofbuilding blocks or tiles constructed of such material as concrete orother suitable plastic composition which is placed in the mold andallowed to harden, the construction of the mold being such as to permitthe hardened or completed blocks or tiles to be readily extracted orwithdrawn from the mold at the proper time.

\Vith the above general object in view and other minor objects, thenature of which will more fully appear as the description proceeds, theinvention consists in the novel construction, combination, andarrangement of parts, as hereinafter fully described, illustrated, andclaimed.

In the accompanying drawings, Figure 1 is a perspective view of a singlehollow blocl mold embodying the present invention. Fig. 2 is a plan viewof the same. Fig. 3 is a central vertical longitudinal section throughthe mold, showing the removable bed-piece and omitting the base-plate.Fig. 1 is a detailed section showing the removable hopper. Fig. 5 is aplan view of a double mold. Fig. 6 is a vertical cross-section throughthe double mold. Fig. 7 is a plan view of a multiple mold. Fig. 8 is anenlarged vertical crosssection through a portion of the same.

Like reference-numerals designate corresponding parts in all figures ofthe drawings.

The mold contemplated in this invention comprises, essentially, abase-plate l of suitable size and a mold-body superimposed thereon andconsisting of oppositely-locatedsides and ends, three of which sides andends are hinged to the base-plate, as shown, 2 designating what may betermed the "front side, 3 the ends, and tthe back or stationary wall ofthe mold. The front 2 and the ends 3 are hinged to the base-plate 1, asclearly shown in Figs. 1 and 2, the said side and ends being providedwith hinge-lugs 5, which are pivotally connected at 6 to other lugs 7 onthe base-plate. The back 1 is stationary, or, in other words, said backbears a fixed relation to the base and is preferably connected with thebase by suitable braces or feet 8, which admit of the bottom edge of thefixed back being located at a suitable distance above the base-plate 1to admit of the interposition of a removable bed-piece 9. The front 2and the ends 3 also have their bottom edges located a suitable distanceabove the base-plate to admit of the insertion of the removablebed-piece 9.

The bed-piece 9 is preferably composed of wood and when placed upon thebase-plate 1 is just thick enough to fill the space between thebase-plate and the bottom edges of the mold-body, as shown in Fig. 1,the bottom edges of the sides of the mold resting upon said bed-piece.The bed-piece also serves as a support for a centrally-arranged hollowcore 10, which is of the same depth from top to bottom as the height ofthe sides of the mold.

The core 10 is hollow and substantially rectangular in horizontalsection, as clearly indicated in the drawings, while the sides and endsof the core are inclined, as shown at 11 and 12, to allow said core tobe withdrawn from the molded block after the concrete composition hasbeen tamped around the same. The ends of the core are also preferablyoffset to form shoulders 13 in the inside ofthe block or core openings,so thau a handhold is provided which makes it possible for the builderto easily adjust the block on the wall or other structure.

The hollow core 10 is provided near the top thereof with a crossibar14:, by means of which the core may be lifted from the block after thesame has hardened sufliciently, said crossbar enabling a suitable leveror pry 15 to be used in extracting the core in the manner illustrated inFig. 3. The base plate 1 is also cut away orslotted at each end, asshown at 16, to enable the fingers of the operator to be insertedbeneath the removable bed-piece 9, so that the latter may be lifted outof place and properly reinserted after the hinged side and ends havebeen folded down in the manner indicated by dotted lines in Figs. 5 and6.

In order to hold the hinged sides of the mold in place when standingupright, the ends 3 are preferably provided with cleats or flanges 17,as shown, the same extending outside of the hinged front and fixed back,so as to interlock therewith. After the composition has been tamped inthe mold a removable top plate 18, with opening the size of or a littlelarger than the core and through which the core is drawn, is placedthereon, which levels up the IIO composition and gives a smooth finishto that portion of the block which is presented at the top of the mold.

in feeding the material into the mold resort is had to a detachablehopper 19, having flaring sides and provided with a downwardly extendingflange 20, which surrounds the top of the mold and engages the sides andends thereof, as indicated in Fig. 4:, thereby retaining said sides andends in operative position, as well as to hold the hopper in place.After the mold has been filled and tamped the hopper 19 is detached andthe top plate 18 placed in position.

In Figs. 5 and 6 l have shown a double mold. which, itwill be observed,involves exactly the same principles as that shown in Figs. 1, 2, and 3.It will be seen that in place of the fixed or stationary back at 1cmploy a fixed or stationary partition 21, while the opposite sides 22and the ends 23 of the double mold fold outward and downward the same asthe parts 2 and 3 of the single mold. illustrated in Fig. 1. In allother respects the double mold shown in Figs. 5 and 6 is the same asthat shown in Figs. 1 to 3, inclusive.

In Figs. 7 and 8 l have shown a multiple mold, or. in other words, amold in which several blocks may be simultaneouslymolded. in suchmultiple mold the front (indicated at 24) is hinged similar to the front2, (shown in Fig. 1,) so as to fold outward and downwards while the back25 is fixed or stationary the same as the back 4; in Fig. 1 and the backor partition 21 in Fig. Between the front 24: and the back 25 isarranged a plurality of backs or partitions 26, each of whichconstitutes alternately the front and back of one of the compartments ofthe multiple mold. By reference to Fig. 8 it will be seen that each backor partition 26 is hinged at its lower edge, as shown at 27, to theremovable bedpiece 9, corresponding to the bed -piece 9, (shown in Fig.1,) and it will be observed that the hinge 27 is so arranged that theback or partition 26 is adapted to fold downward in the same directionas the front 24. after the block or tile has beenremoved from thecompartment or mold-chamber, of which the said back or partition formsone of the sides or walls. By means of the construction just describedit willbe seen that the blocks formed in the mold-compartments may beremoved successively by folding the sides and ends of each compartmentoutward and downward and withdrawing the core. As soon as one blocksonzae has been removed it allows the sides and ends of the adjoiningcompartment to be moved outward to admit of the extraction of thesucceeding blocks.

It will thus be seen that the mold may be made single, double, ormultiple, thus giving any desired capacity, and that where the double ormultiple construction is employed a single back or partition is employedas a part of each mold-chamber. The mold is also simple and economicalin construction and may be operated expeditiously.

Having thus described the invention, what is claimed, and desired to besecured by Letters Patent, is

1. A mold comprising a permanent base, mold sides connected with thebase at their lower edges with such edges spaced a distance above theplane of the top of the base, certain of said mold sides being hinged attheir connection with the base, a separate temporary bed-piece removablyplaced upon the base and inserted beneath the lower edges of the moldsides, and a removable core arranged to rest on the temporary bed-piece.

2. A mold comprising a permanent base, mold sides arranged over the baseand connected therewith, certain of said sides being hinged at theirconnection with the base, and a core removably mounted over the base andprovided at opposite points with offsets or shoulders and with aninterior rigid cross-bar.

3. A mold comprising a base-plate, a stationary back, a hinged front,hinged sides extending from front to back, and one or more hinged wallslocated intermediate the said front and back of the mold, substantiallyas described.

t. A mold comprising a base-plate, mold sides extending upward therefromand connected therewith. certain of said sides being hinged to the base,a core removably mounted between the mold sides, a removable top plate,and a detachable hopper having an interlocking engagement with the topedges of said sides to retain them in operation through the tampingoperation, the said top plate and hopper being interchangeablyapplicable to the mold-body, substantially as described.

In testimony whereof laffix my signature in presence of two witnesses.

EDWARD KEAGY.

\Vitnesses:

XVINLLRED KEAGY, E. S. RANDOLPH.

